脉冲电沉积制备颗粒增强金属基纳米复合材料的研究

项目名称： 脉冲电沉积制备颗粒增强金属基纳米复合材料的研究

项目编号： No.20806035

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 徐瑞东

作者单位： 昆明理工大学

项目金额： 18万元

中文摘要： 根据电结晶理论和弥散强化理论，充分利用脉冲电沉积的技术优势和材料多元复合的协同优势，在普通碳钢表面制备了具有均匀稳定显微组织、较高显微硬度、较好耐磨、耐腐蚀和抗高温氧化性的Ni-W-P/CeO2-SiO2颗粒增强金属基纳米复合材料。 进行了纳米复合材料脉冲电沉积制备过程的成分设计优化、动力学优化(速率、机理)和过程优化(装置、条件)的研究，获得了较佳的电解液组成和工艺参数；探明了纳米复合材料双脉冲电沉积过程的初期生长行为和沉积机理；探明了纳米复合材料热处理过程中的相结构、结晶度与晶粒尺寸的变化规律；探讨了纳米复合材料与基体金属的界面结合方式；获得了纳米复合材料显微硬度、摩损率的变化规律；获得了纳米复合材料腐蚀过程动力学和氧化过程动力学的规律及机理。通过研究，开发和建立起了工艺及设备优化配置的实验室水平的连续制备技术体系。 项目运行期间，出版学术专著1部；申请中国发明专利1项；发表学术论文13篇，其中，SCI收录7篇次，EI收录6篇次，ISTP收录2篇次；完成人才培养5人；参加国际学术会议5次。

中文关键词： 纳米复合材料；金属基；固体颗粒；脉冲电沉积；组织结构

英文摘要： According to electrocrystallization and dispersion strengthened theory, on the basis of technological advantage of pulse electrodeposition and cooperating advantage of multi-component materials,Ni-W-P/CeO2-SiO2 particle-reinforced metal matrix nano-composites were prepared out on the surface of common carbon, possessing homogenous and stable microstructures, higher micro-hardness, better wear resistance, corrosion resistance and high temperature oxidation resistance. The composition design optimization, dynamic optimization (rate and mechanism) and process optimization (device and conditions) for nano-composites were researched during the course of pulse electrodeposition, and the better bath compositions and process parameters were obtained. The initial growth behavior and depositon mechanism for pulse electrodeposition course were ascertained. Phase structures,crystallinity and grain sizes for the nano-composites were obtained during the course of heat treatment.The interracial bonding between nano-composites and substrate metal was discussed. The change rules of microhardness and wear rate for the nano-composites were obtained. The dynamics regularity and mechanism of corrosion and oxidation course for the nano-composites were obtained.At last,the continuous preparation technology system with optimized process and device were established in laboratory. During the course of the project, 1 academic monograph has been published.1 invention patent in China has been applied for.13 academic papers have been published,in which SCI cited 7 times, EI cited 6 times and ISPT cited 2 times.5 students have been cultivated and 5 times international academic conferences were participated.

英文关键词： nano-composites;metal matrix;solid particles;pulse electrodeposition; microstructures and structures